Well Danny, that's why you can rightly be called a speaker designer/engineer, and Ric an audiophile tweaker (a quite advanced one at that!). Both valuable, but not always the same. A speaker has to be designed with solid engineering principles first; only then can tweaking begin. Some tweakers have been ahead of the engineer/designer of some products, and their tweaks actually incorporated into commercial products, both in loudspeakers and electronics. Turntables too; Brooks Berdan applied his knowledge of tuned suspensions (learned during his days of involvement in race-car design and driving) to the original Oracle turntable. He added a block of billet aluminum to the floating acrylic sub-chassis of the Oracle in just the correct location to endow it with evenly distributed mass (which the commercial product lacked). The three suspension springs (all with the same resonant frequency) were then able to keep the sub-chassis balanced as the 8-lb. platter spun---when you pushed down on the sub-chassis and let go, it bobbed up and down evenly in all four corners, just as a car with a correctly designed and built suspension does. Brooks offered his tweak as an after-market mod, and it was eventually incorporated into the turntable by Oracle. But tweaking can NOT violate the engineering (assuming the engineering is solid), only take it further. Replacing cheap components in electronics (including cross-overs, as everyone here is well aware) being a basic tweak. If the component value is kept the same, it's tweaking; if it's changed, it's engineering, is how I look at it. By that definition, Ric Shultz actually IS an engineer/designer. Measurements, as far as they go (and they go much further now than they did a few decades ago), reveal what is really happening in time and space. Tweaking, at it's best, addresses issues the designer/engineer of a product was not concerned with, or the manufactured didn't want to spend money on (often to keep a product at a certain price-point). The efforts of super-tweakers like Brooks and Ric have helped advance the State-Of-The-Art, but if their tweaks conflict with and/or contradict the designer/engineer's work (as Ric's have with yours Danny), either the engineer or the tweaker is "wrong"!